Edmund keith



@uiten talrsstrnt @frn j EDMUND KEITH, or BUFFALO, NEWYORK. LettersPatent No. 73,343, dated January 14, 1868.

IMPROVEMENT IN SHIGLB-MAOHINES.

To ALL WHOM IT MAY CONGERN:

Be it known that I, EDMUND KEITH, ofthe city of Bualo, in the county ofEric, and State of New York, have invented certain new and usefulImprovements in Machines for Sewing Shingles; and I do lhereby declarethat the following is a full 'and exaotdescription' ther-cof, referencebeing had to the accompanyingl drawings, makingpart of thisspecifica-tion, in.which Figure 1 is a plan of my improved machine. pFigure 2is a central'vertical section in plane of azz, fig. 1,the'gearing and a portion of the saw-shaft being shown in elevation'.- lFigure 3 is a plan of the bottom inverted.

Figure. 4, a view'of the eccentric, G, detached. I -Like letters ofreference designate corresponding parts in all the figures. I Myimprbvements relate to machines for sawing shingles by means of acircular saw; and the invention consists in the mechanism by which'theblocks of timber are alternately clamped and released; the tiltingdevicefor tipping and inclining' the block alternatelyr in one direction, and`in the opposite for producing the requisite taper of the shingles; andthe peculiar arrangement for operating the said tilting-device, all ashereinafter more fully set forth.

In the drawings, A represents 'any suitable frame for supporting theparts. B, a horizontal circular revolving disk or frame, provided with aseries of apertures, a a, for the reception ofthe blocks from which theshingles Aare to be sawcd. C,the vertical shaft of. said disk. D D, aseries of radial'arms extending from a hub rigidly secured to the shaftC. E E, -levers pivoted in thepeuds of these arms, which form a fulcrumthere# for, by which theclamps F, to which the lowcr ends of the leversare attached, are operated, as will presently be explained. Gr is a camor eccentric, provided with an abrupt jog or shoulder, b, and rigidlyfastened to the top ofthe frame A, by which the upper ends ot' thelevers E areactuated iu releasing the clamps, (shown most clearly iug.2.) H is the coneutrically-grooved wheel or disk, mounted on shaft C, bywhich the tiltingdevice is operated. I, a circular saw attached to theupper end of a shaft, J. 4c is a drivingpulley mounted i thereon. d, apinion gearing with bevel-wheel K, mounted on the end of a horizontalshaft, L, that is supported in suitable bearings, and providedwith aYscrew, e, which gives motion to a spur-wheel, M, on the shaft C, bywhich the latter, and the parts attached thereto, receive their properretarded motion. It is evident that other gearing than that justdescribed may be employed to impart the necessary motion to the shafts CJ.

The jaws' or clamps F, (of which there is one for each of the spaces,a,)are constructed so as to slide in the ways formed byfthe sidesorpartitions ff between these apertures, and the lugs g g, which are caston these ways, overlapping the ends of the jaws, as shown. There is ashank or stem, z', extending from each jaw through the lower end of thelevers E, and a spiral spring, t, while-its end lits so' as to slide inradially-formed sockets, j, iuthe hub k, which i's preferably cast withthe frame B. A pin, Z, or equivalent, is used to retain the end of thelever in place on the stem z'. The function of the spiral springs is topress the jaw outward, clamping the block, shown in red lines, g. 2,except when it is released by the eccentric G and lever, which compressthe spring., as shown in black lines, lig. 2. v l I N represents thetilting-frame, which consists of two bars, m m, secured to the ends oftwo other bars, 1t, which are pivoted at their centre by a rod, 0, tothe arms pp of a bracket, O, bolted or otherwise fastened te theside ofthe frame A. v P is a horizontal bar, the outer ends of which passbetween the armspp beneath the pivoted'framc N, and has secured t-o itsupper side the adjustable frame Q, constructed as shown, with elevatedinclined arms q g, on which the bars 1t of the tilting-frame rest, andwith a slot, 1', in -which passes the bolt e that fastens it to the endof the har P. When this bar is moved in and out, carrying `with'it theframe Q, it is evident ,that the inclined-arms q will cause thetilting-frame to slightly incline, according to the direction in whichit is moved, as shown in g. 2, and thus -incl-ine the block restingthereon, first in one direction and then inthe opposite, so as to givethe' shingle, as it is sawed therefrom, (the saw being shown inredlines, fig. 2,) the required taper.

This desired reciprocatiou of the bar l? is produced in the followingmanner t' The disk H is provided in its under side, as shown in thcinverted plane, tig. 3, with two concentric grooves, t u, in which apin, v, from the bar l?, alternately projects. The inner end of this baris divided so as telit in a transverse groovc,w, formed in the hub ofthe disk H. The ledge y, intervening between thetwo grooves, tu, isformed with an`open space or passage, z, from one to the other. A shortdog or arm, e', is so pivoted atthis passage, between the grooves, as toenable it to be inclined in either. direction,'against the inner orouter ledges of the disk, so as to guide the pin v, alternately from onegroovev to the other, at every revolutionbf the'wheel. The guide e isprovided with lugs d', against which the pin, after it has beenconducted from one groove to the other, comes'in contact, causing theguide to incline against the. opposite ledge, seas to return the pin tothe irst'groove again, after the Wheel has completed a revolution. Thereis a plate, V, arranged under that portion of wheel B which is oppositethe saw, for a purpose presently to be explained.

Itis evident that the construction of the several parts of my machinemay be considerably varied, and equivalents substituted, withoutmaterially affecting-'its principle or mode of operation.

The machine being constructed, as before described, and the frameQa'djusted on the bar P, so that-it will cause the inclination of thetilting-frame to be equal, whether in one or the other of its positions,the blocks of timber sawed of the proper lengthare dropped in the spacesa a on the plate V; the greater diameter ofthe eccentric G, ou that sidethrough the levers E, operating to draw back the clamps, as shown iniig. 2, so as to permit their easy'insertion. When Vthe wheel B,revolving in th'c direction of the arrow, brings the upper end of thelever past the jog I; the eccentric, it releases the compressed spring,which forces the jaw F against the block that has at this moment beencarried beyond the edge of plate V, and fallen on the tilting-frame, andfirmly clamps it against the edge or periphery of the wheel. The wheelcontinuing its revolution, brings the block in contact with the saw,which speedily cuts off a shingle, when it is carried on, the jaw beinggradually withdrawn by the action of the eccentric and lever compressingthe spring, till the block is entirely released by the time it has beencarried around over plate V. g By the time it is again brought 'over thetilting-frame, the pin in the bar P will have been transferred by theguide or arm c', to the other groove in the Wheel H, causing the frameand block, when it is transferred to it, to incline in the oppositedirection. The attendant standing o'n the side opposite from the saw,can insert the blocks inthe spaces a, and removetlie remnants as theyare successively brought before him, by the revolution of the wheel, themachine requiring no other attendant, while it'performs its Work in arapid, perfect, and automatic manner.l

The saw is preferably arranged so as to decline slightly from thecutting side, for the purpose of preventing it from unduly pressingagainst the block, in its passage over it after the shingle has been cuttherefrom..

, The advantages of my improvements are obvious. The machine is simpleand cheap in construction, and is not liable to get out of repair. i Thesaw is so arranged as to cut partially across the grain, which is agreat advantage over the ordinary arrangements, in which it cutslengthwise.

With my machine there is no back-movement of the saw over the block, todull the former and scratch the latter, as is the case with machinesthat use a saw which reciprocates back and forth.

What I claim as my invention, is-f i l. The sliding bar P and frame Q,provided with inclined 4arms q g, arranged and operating the pivotedtilting-frame N, substantially as set forth.

2. I claim the concentrically-grooved wheel H, in combination with thebar. P., grooves u t, dog c', with projections d', and pin v, allconstructed and operating substantially as described.

3. I claim the sliding-spring jaw or clamp F, in combination with thelever E and eccentric G, for alter- `nately operating to release andholdthe bolt-s, all constructed and arranged substantially as set forth.

In witness whereof, I have hereunto signed my name in the presence oftwo subscribing witnesses. E. KEITH.

Witn esses JAY HYATT, ALBERT HAIGHT.

